By planetary politics is usually meant today a conception of politics that can address the ecological crisis of the Anthropo-cene and associated -cenes (e.g. Capitalocene, etc.) from a perspective that acknowledges the agency of the Earth system and all of its non-human actants. At the same time, a planetary conception of politics often understands the Earth as the One Home for all living and non-living beings. As Carl Schmitt once said, the conception of the “home”, and all the orders that it comports, lies at the root of western jurisprudence. In this paper I suggest some ways in which to think together the concept of Earth as Home, as putative basis for a new “law” of the Earth, with the quite distinct idea of planetary habitability found in Earth system sciences by working through the biological and bio-political conceptions of “habitat”.